Display substrate and display device

ABSTRACT

A display substrate and a display device. The display substrate includes a first sub-pixel ( 111 ), a second sub-pixel ( 112 ), and a first spacer ( 0101 ). A line connecting the center (C 1 ) of the first sub-pixel ( 111 ) and the center (C 2 ) of the second sub-pixel ( 112 ) is a center line (CL 1 ); the center line (CL 1 ) is not perpendicular to a first direction (X); the first direction (X) is at least one of the row direction or the column direction. The first spacer ( 0101 ) is disposed between the first sub-pixel ( 111 ) and the second sub-pixel ( 112 ), and the extension direction (E 01 ) of first spacer ( 0101 ) between the first sub-pixel ( 111 ) and the second sub-pixel ( 112 ) is not perpendicular to the first direction (X). Therefore, the display substrate can improve the different viewing angle color cast and improve the display quality.

This application is a continuation application of U.S. Ser. No.16/622,045 filed on Dec. 12, 2019 which is a national stage applicationof PCT/CN2018/124881 filed on Dec. 28, 2018, which claims priority ofthe Chinese Patent Application No. 201810135948.6, filed on Feb. 9,2018, the disclosure of which is incorporated herein by reference in itsentirety as part of the present application.

TECHNICAL FIELD

Embodiments of the present disclosure relates to a display substrate anda display device.

BACKGROUND

With the continuous development of display technology, people havehigher and higher requirements for the resolution of display devices.Due to the advantages of high display quality, the application range ofhigh-resolution display devices is becoming wider and wider. In general,the resolution of a display device can be improved by reducing the sizeof pixels and reducing the spacing between pixels. However, thereduction in the size of pixels and the spacing between pixels alsorequires higher and higher precision of the manufacturing process, whichleads to the increase in the difficulty of the manufacturing process andthe manufacturing cost of the display device.

On the other hand, sub-pixel rendering (SPR) technology can make use ofthe difference of human eyes' resolution to sub-pixels of differentcolors, change the mode of defining a pixel simply by conventional red,green and blue sub-pixels, share sub-pixels of certain positionresolution insensitive colors among different pixels, and use relativelyfew sub-pixels to simulate and realize the same pixel resolutionperformance capability, thus reducing the difficulty of themanufacturing process and the manufacturing cost.

In display devices, spacers are usually provided to play a supportingrole.

SUMMARY

Embodiments of the present disclosure provide a display substrate and adisplay device to reduce color shift under different viewing angles andimprove display quality.

At least one embodiment of the present disclosure provides a displaysubstrate, including: a first sub-pixel, a second sub-pixel and a firstspacer; a connection line between a center of the first sub-pixel and acenter of the second sub-pixel is a center connection line, the centerconnection line is not perpendicular to a first direction, and the firstdirection is at least one selected from the group consisting of a rowdirection and a column direction; the first spacer is between the firstsub-pixel and the second sub-pixel, and an extension direction of thefirst spacer between the first sub-pixel and the second sub-pixel is notperpendicular to the first direction.

For example, the extension direction of the first spacer has an includedangle with the first direction, and a range of the included angle is40°-50° or 130°-140°.

For example, the included angle is 45° or 135°.

For example, the center connection line is not parallel to the firstdirection.

For example, the display substrate includes a plurality of pixel groups,each of the plurality of pixel groups includes one first sub-pixel, onesecond sub-pixel, one third sub-pixel and one fourth sub-pixel; and thefirst spacer is between the first sub-pixel and the second sub-pixelwhich belong to different ones of the plurality of pixel groups.

For example, in each of the plurality of pixel groups, a connection linebetween the center of the second sub-pixel and a center of the thirdsub-pixel is a first line segment; the first sub-pixel and the fourthsub-pixel are between the second sub-pixel and the third sub-pixel andare respectively on two sides of the first line segment; a connectionline between the center of the first sub-pixel and a center of thefourth sub-pixel is a second line segment; a length of the second linesegment is smaller than a length of the first line segment.

For example, a ratio of the length of the second line segment to thelength of the first line segment is less than or equal to ¾.

For example, the display substrate further includes: a second spacer,the second spacer is between two adjacent ones of the plurality of pixelgroups, and the second spacer is between the fourth sub-pixel and thesecond sub-pixel which belong to different ones of the plurality ofpixel groups, or between the fourth sub-pixel and the third sub-pixelwhich belong to different ones of the plurality of pixel groups; anextension direction of the second spacer between the fourth sub-pixeland the second sub-pixel or between the fourth sub-pixel and the thirdsub-pixel is not perpendicular to the first direction.

For example, the first spacer is between the first sub-pixel and thesecond sub-pixel which belong to two adjacent ones of the plurality ofpixel groups, and/or between the first sub-pixel and the fourthsub-pixel which belong to two adjacent ones of the plurality of pixelgroups.

For example, the first spacer and the second spacer around the secondsub-pixel or the fourth sub-pixel form a spacer pair, and the firstspacer and the second spacer in the spacer pair are on the same side ofthe second sub-pixel or the third sub-pixel.

For example, in the same one of the plurality of pixel groups, no spaceris among the first sub-pixel, the second sub-pixel, the third sub-pixeland the fourth sub-pixel.

For example, in each of the plurality of pixel groups, the firstsub-pixel and the fourth sub-pixel are both strip-shaped, and anextension direction of the first sub-pixel and an extension direction ofthe fourth sub-pixel do not coincide.

For example, an included angle between the extension direction of thefirst sub-pixel and the extension direction of the fourth sub-pixelranges from 70° to 100°.

For example, the first sub-pixel and the fourth sub-pixel aresymmetrically arranged relative to the first line segment, and/or thesecond sub-pixel and the third sub-pixel are symmetrically arrangedrelative to the second line segment.

For example, the first line segment extends in the first direction andthe second line segment extends in a second direction; the plurality ofpixel groups are arranged in an array to form a plurality of rows and aplurality of columns, and pixel groups of even rows and pixel groups ofodd rows are arranged in a staggered way; a length of a centerconnection line between the second sub-pixel and third sub-pixel whichare adjacent to each other in two adjacent ones of the plurality ofpixel groups in the first direction is less than the length of the firstline segment; in two adjacent ones of the odd rows or in two adjacentones of the even rows, a length of a center connection line between thefirst sub-pixel and fourth sub-pixel which are adjacent to each other intwo adjacent ones of the plurality of pixel groups in the seconddirection is greater than the length of the second line segment.

For example, an extension line of the second line segment of each pixelgroup passes through a midpoint of a center connection line between twopixel groups which are adjacent to the pixel group in the seconddirection and are in the same row.

For example, in two adjacent ones of the odd rows or in two adjacentones of the even rows, an intersection point of a center connection linebetween two third sub-pixels in two adjacent ones of the plurality ofpixel groups arranged in the second direction and the first line segmentin one pixel group between the two third sub-pixels is between a centerof the first line segment and the center of the second sub-pixel of theone pixel group.

For example, at least one selected from the group consisting of thefirst sub-pixel and the fourth sub-pixel is a sub-pixel with a human eyesensitive color.

For example, in the first direction, widths of the first sub-pixel, thesecond sub-pixel, the third sub-pixel and the fourth sub-pixel are thesame.

For example, the first line segment extends in the first direction andthe second line segment extends in the second direction, the firstspacer and the second spacer have elongated shapes, and extensiondirections of the elongated shapes are different from the firstdirection and the second direction.

For example, at least one selected from the group consisting of thefirst spacer and the second spacer does not overlap with the centerconnection line between the first sub-pixel and the third sub-pixel.

For example, the first line segment extends in the first direction andthe second line segment extends in the second direction, and anorthographic projection of the first spacer on a straight line in thefirst direction does not overlap or partially overlap with anorthographic projection of at least one selected from the groupconsisting of the second sub-pixel and the third sub-pixel on a straightline in the first direction.

For example, a ratio of a sum of numbers of the first spacer and thesecond spacer to a number of sub-pixels is 0.3-1, and the sub-pixelsinclude the first sub-pixel, the second sub-pixel, the third sub-pixeland the fourth sub-pixel.

For example, the first spacer and the second spacer are both transparentspacers.

At least one embodiment of the present disclosure further provides adisplay substrate, including:

a pixel arrangement structure including a plurality of pixel groups;each of the plurality of pixel groups includes a first sub-pixel, asecond sub-pixel, a third sub-pixel and a fourth sub-pixel; in each ofthe plurality of pixel groups, a connection line between a center of thesecond sub-pixel and a center of the third sub-pixel is a first linesegment; the first sub-pixel and the fourth sub-pixel are between thesecond sub-pixel and the third sub-pixel and are respectively at twosides of the first line segment; a connection line between a center ofthe first sub-pixel and the center of the fourth sub-pixel is a secondline segment; a length of the second line segment is less than a lengthof the first line segment;

the display substrate further includes at least one of the followingspacers:

a first spacer between the first sub-pixel and the second sub-pixelwhich are adjacent to each other in two adjacent ones of the pluralityof pixel groups;

a second spacer between the fourth sub-pixel and the second sub-pixelwhich are adjacent to each other in two adjacent ones of the pluralityof pixel groups; and

a third spacer between the first sub-pixel and the fourth sub-pixel ineach of the plurality of pixel groups.

For example, the plurality of pixel groups are arranged in an array toform a plurality of rows and a plurality of columns, and pixel groups ofeven rows and pixel groups of odd rows are arranged in a staggered way.

For example, the pixel groups of the even rows and the pixel groups ofthe odd rows are offset by a length of half a pixel group in a firstdirection, and the first direction is a row direction.

At least one embodiment of the present disclosure further provides adisplay device, including the display substrate according to at leastone embodiment of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to clearly illustrate the technical solution of the embodimentsof the present disclosure, the drawings of the embodiments will bebriefly described in the following; it is obvious that the describeddrawings are only related to some embodiments of the present disclosureand thus are not limitative of the present disclosure.

FIG. 1A is a schematic diagram of a display substrate;

FIG. 1B is a schematic cross-sectional view of a display substrate;

FIG. 1C is a schematic view of a display device viewed at a certainviewing angle;

FIG. 2A is a schematic diagram of a display substrate according to anembodiment of the present disclosure;

FIG. 2B is a schematic diagram of a display substrate according toanother embodiment of the present disclosure;

FIG. 2C is a schematic diagram of a display substrate according toanother embodiment of the present disclosure;

FIG. 2D is a schematic diagram of a display substrate according to anembodiment of the present disclosure;

FIG. 2E is a schematic diagram of a pixel arrangement structure in adisplay substrate according to an embodiment of the present disclosure;

FIG. 3A is a schematic diagram of a pixel arrangement structure in adisplay substrate according to an embodiment of the present disclosure;

FIG. 3B is a schematic diagram of a pixel arrangement structure in adisplay substrate according to another embodiment of the presentdisclosure;

FIG. 3C is a schematic diagram of a pixel arrangement structure in adisplay substrate according to another embodiment of the presentdisclosure;

FIG. 4 is a schematic diagram of a pixel arrangement structure in adisplay substrate according to an embodiment of the present disclosure;

FIG. 5A is a schematic diagram of a pixel arrangement structure in adisplay substrate according to another embodiment of the presentdisclosure;

FIG. 5B is a schematic diagram of a pixel arrangement structure in adisplay substrate according to another embodiment of the presentdisclosure;

FIG. 6 is a schematic diagram of a pixel arrangement structure in adisplay substrate according to an embodiment of the present disclosure;

FIG. 7A is a schematic diagram of a pixel arrangement structure in adisplay substrate according to another embodiment of the presentdisclosure;

FIG. 7B is a schematic diagram of a pixel arrangement structure in adisplay substrate according to another embodiment of the presentdisclosure;

FIG. 8 is a schematic diagram of a pixel arrangement structure, drivelines and data lines of a display substrate according to anotherembodiment of the present disclosure;

FIG. 9 shows a schematic view of a display substrate;

FIG. 10 shows a schematic diagram of a display substrate according toone or more embodiments of the present disclosure;

FIG. 11 shows a schematic diagram of a display substrate according toone or more embodiments of the present disclosure; and

FIG. 12 is a cross-sectional view of a display substrate according to anembodiment of the present disclosure.

DETAILED DESCRIPTION

In order to make objects, technical details and advantages of theembodiments of the present disclosure apparent, the technical solutionsof the embodiment will be described in a clearly and fullyunderstandable way in connection with the drawings related to theembodiments of the present disclosure. It is obvious that the describedembodiments are just a part but not all of the embodiments of thepresent disclosure. Based on the described embodiments herein, thoseskilled in the art can obtain other embodiment(s), without any inventivework, which should be within the scope of the present disclosure.

Unless otherwise defined, all the technical and scientific terms usedherein have the same meanings as commonly understood by one of ordinaryskill in the art to which the present disclosure belongs. The terms“first,” “second,” etc., which are used in the description and theclaims of the present application for disclosure, are not intended toindicate any sequence, amount or importance, but distinguish variouscomponents. The terms “comprise,” “comprising,” “include,” “including,”etc., are intended to specify that the elements or the objects statedbefore these terms encompass the elements or the objects and equivalentsthereof listed after these terms, but do not preclude the other elementsor objects. The phrases “connect”, “connected”, etc., are not intendedto define a physical connection or mechanical connection, but mayinclude an electrical connection, directly or indirectly.

FIG. 1A illustrates a display substrate. As illustrated by FIG. 1A, thedisplay substrate includes a pixel arrangement structure, which is atypical pentile arrangement. A minimum repeating unit includes two greensub-pixels 0111, a red sub-pixel 0112 and a blue sub-pixel 0113. Thepixels are uniformly distributed, and high pixel per inch (PPI) displayis easy to realize. In each row, the minimum repeating units arearranged in a first direction X, and spacers 010 are provided betweenadjacent sub-pixels that are in the same minimum repeating unit orbetween different minimum repeating units. The spacers 010 extend in asecond direction Y. The first direction X is perpendicular to the seconddirection Y.

FIG. 1B illustrates a schematic cross-sectional view of a displaysubstrate, which may be a cross-sectional view taken along the directionAB in FIG. 1A. As illustrated by FIG. 1B, a green sub-pixel 0111, a redsub-pixel 0112, a blue sub-pixel 0113, and spacers 010 are disposed on abase substrate 101. Upon the display substrate being viewed at a certainangle, the spacers have different influence on the luminous brightnessof each sub-pixel, resulting in viewing angle color shift. For example,upon the display substrate being viewed at different angles along thefirst direction X, the spacers 010 block light of some sub-pixels fromentering the human eye, thereby forming color shift at different viewingangles. That is, upon the same picture being viewed from the left andright sides of FIG. 1B, there is a viewing angle color shift.

FIG. 1C illustrates a schematic view of a display device viewed at acertain viewing angle. FIG. 1C shows an example of a display devicebeing viewing on the right side of the display device. Because thespacers 010 block light of some sub-pixels, upon the display devicebeing viewed from the left side, the color of the same picture isdifferent from that when viewing from the right side.

FIG. 2A illustrates a display substrate according to at least oneembodiment of the present disclosure. The display substrate includes afirst sub-pixel 111, a second sub-pixel 112, and a first spacer 0101. Aconnection line between a center C1 of the first sub-pixel 111 and acenter C2 of the second sub-pixel 112 is a center connection line CL1,which is not perpendicular to the first direction X, and the firstdirection X is at least one of the row direction or the columndirection.

The first spacer 0101 is disposed between the first sub-pixel 111 andthe second sub-pixel 112, and an extension direction of the first spacer0101 between the first sub-pixel 111 and the second sub-pixel 112 is notperpendicular to the first direction X.

For example, the first spacer 0101 extends between the first sub-pixel111 and the second sub-pixel 112, and the extension direction E01 of thefirst spacer 0101 is not perpendicular to the first direction X. In thisembodiment of the present disclosure, the first direction X being therow direction is taken as an example to explain. The extension directionE01 of the first spacer 0101 is different from the first direction andthe second direction.

In the display substrate provided by at least one embodiment of thepresent disclosure, the arrangement mode of the spacers is adjusted, andupon the extension direction E01 of the first spacer 0101 being notperpendicular to the first direction X, the shielding of the firstspacer to the first sub-pixel 111 can be reduced, and the viewing anglecolor shift when viewing a picture under different viewing angles can befurther reduced.

As illustrated by FIG. 2A, in the display substrate provided by one ormore embodiments of the present disclosure, in order to reduce theshielding of the first sub-pixel 111 by the first spacer 0101, theextension direction E01 of the first spacer 0101 has an included angleθ1 with the first direction X. For example, the included angle θ1 rangesfrom 40 to 50 degrees or from 130 to 140 degrees. Further, for example,the included angle θ1 is 45 degrees or 135 degrees. In this case, thefirst spacer 0101 has the smallest shielding to the first sub-pixel 111,which can greatly improve the viewing angle color shift.

As illustrated by FIG. 2A, in the display substrate provided by one ormore embodiments of the present disclosure, the center connection lineCL1 is not parallel to the first direction X.

As illustrated by FIG. 2A, in the display substrate provided by one ormore embodiments of the present disclosure, the second sub-pixel 112 isincluded in the first pixel group 011 and the first sub-pixel 111 isincluded in the second pixel group 012. The first pixel group 011further includes one first sub-pixel 111, one third sub-pixel 113, andone fourth sub-pixel 114, and the second pixel group 012 furtherincludes one second sub-pixel 112, one third sub-pixel 113, and onefourth sub-pixel 114. In the first pixel group 011 and the second pixelgroup 012, a connection line between the center C2 of the secondsub-pixel 112 and the center C3 of the third sub-pixel 113 is a firstline segment LS1; the first sub-pixel 111 and the fourth sub-pixel 114are located between the second sub-pixel 112 and the third sub-pixel113, and are respectively located on both sides of the first linesegment LS1. The first pixel group 011 and the second pixel group 012are adjacent in the column direction and staggered in the row direction.For example, both the first pixel group 011 and the second pixel group012 can be referred to as pixel group 01.

As illustrated by FIG. 2A, in the display substrate provided by one ormore embodiments of the present disclosure, in the first pixel group 011and the second pixel group 012, a connection line between the center C1of the first sub-pixel 111 and the center C4 of the fourth sub-pixel 114is a second line segment LS2; the ratio of the length of the second linesegment LS2 to the length of the first line segment LS1 is less than orequal to ¾. Thus, upon the first sub-pixel 111 and the fourth sub-pixel114 being sub-pixels of the same color, the light emitting layerpatterns of the first sub-pixel 111 and the fourth sub-pixel 114 in thesame pixel group 01 can be formed by vapor deposition using the sameopening of the mask plate.

In the display substrate provided by one or more embodiments of thepresent disclosure, the first spacer 0101 may be disposed between thefirst sub-pixel 111 and the second sub-pixel 112 of two adjacent ones ofthe plurality of pixel groups and/or disposed between the firstsub-pixel 111 and the fourth sub-pixel 114 of two adjacent ones of theplurality of pixel groups.

As illustrated by FIG. 2A, the display substrate according to one ormore embodiments of the present disclosure further includes a secondspacer 0102, the second spacer 0102 is located between adjacent pixelgroups 01, the second spacer 0102 is located between the fourthsub-pixel 114 and the second sub-pixel 112 which belong to differentones of the plurality of pixel groups 01, or is located between thefourth sub-pixel 114 and the third sub-pixel 113 which belong todifferent ones of the plurality of pixel groups; an extension directionof the second spacer 0102 between the fourth sub-pixel 114 and thesecond sub-pixel 112 or between the fourth sub-pixel 114 and the thirdsub-pixel 113 is not perpendicular to the first direction X.

For example, the second spacer 0102 extends between the fourth sub-pixel114 and the second sub-pixel 112 which belong to different ones of theplurality of pixel groups 01, or extends between the fourth sub-pixel114 and the third sub-pixel 113 which belong to different ones of theplurality of pixel groups 01. The extension direction E02 of the secondspacer 0102 is not perpendicular to the first direction X. For example,the extension direction E02 of the second spacer 0102 is different fromthe first direction and the second direction.

For example, the display substrate includes a plurality of first pixelgroups 011 located in odd rows and a plurality of second pixel groups012 located in even rows. The display substrate further includes asecond spacer 0102, and the second spacer 0102 extends between thefourth sub-pixel 114 in at least one selected from the group consistingof the first pixel group 011 and the second pixel group 012 and at leastone selected from the group consisting of the second sub-pixel 112 andthe third sub-pixel 113 adjacent thereto in the column direction. Theextension direction E02 of the second spacer 0102 is not perpendicularto the first direction X.

For example, in order to reduce the shielding of the fourth sub-pixel114 by the second spacer 0102, the extension direction E02 of the secondspacer 0102 has an included angle θ2 with the first direction X. Forexample, the included angle θ2 ranges from 40 to 50 degrees or from 130to 140 degrees. Further, for example, the included angle θ2 is 45degrees or 135 degrees. In this case, the second spacer has the smallestshielding to the fourth sub-pixel 114, which can further reduce theshielding to the pixels sensitive to human eyes and greatly improve theviewing angle color shift.

As illustrated by FIG. 2A, the spacers can have elongated shapes, andtheir extension directions are different from the first direction andthe second direction. The spacers include a first spacer 0101 and asecond spacer 0102. For example, the shapes of the spacers areorthographic projections of the spacers on the base substrate.Similarly, the shapes of the sub-pixels are the shapes of theorthographic projections of the sub-pixels on the base substrate.

As illustrated by FIG. 2A, a connection line between the center of thefourth sub-pixel 114 in the second pixel group 012 and the center of thethird sub-pixel 113 or the fourth sub-pixel 114 in the first pixel group011 adjacent to the fourth sub-pixel 114 is a center line CL2, and thecenter line CL2 is not perpendicular to the first direction X.

In the display substrate provided by one or more embodiments of thepresent disclosure, at least one of the first sub-pixel 111 and thefourth sub-pixel 114 is a sub-pixel with a human eye sensitive color.For example, the second sub-pixel 112 and the third sub-pixel 113 can besub-pixels of color insensitive to human eyes. In this embodiment of thepresent disclosure, the shielding of the sensitive color sub-pixels bythe first spacer and/or the second spacer can be reduced, so that thecolor shift under different viewing angles can be reduced. For example,the first spacer and/or the second spacer can be located betweensub-pixels of sensitive color and sub-pixels of non-sensitive color.

As illustrated by FIG. 2A, in the display substrate provided by one ormore embodiments of the present disclosure, the first spacer 0101 andthe second spacer 0102 located around the second sub-pixel 112 or thefourth sub-pixel 114 form a spacer pair 01012, and the first spacer 0101and the second spacer 0102 in the spacer pair 01012 are located on thesame side of the second sub-pixel 112 or the third sub-pixel 113. InFIG. 2A, the spacer pair 01012 is illustrated as being located on thesame side of the second sub-pixel 112. The spacer pair 01012 is locatedaround the non-sensitive color sub-pixels, thereby reducing theinfluence of the spacer pair 01012 on the display color and reducing theviewing angle color shift.

For AMOLED display substrates, spacers have two functions. One functionis to support the mask plate for vapor deposition of the light emittinglayer pattern, and the other function is to support the cover plateduring packaging.

As illustrated by FIG. 2A, in the display substrate provided by one ormore embodiments of the present disclosure, in order to reduce thenumber of spacers in the display substrate and reduce color shift atdifferent viewing angles, spacers are not provided between the firstsub-pixel 111, the second sub-pixel 112, the third sub-pixel 113 and thefourth sub-pixel 114 in at least one of the first pixel group 011 andthe second pixel group 012 (in the same pixel group 01). For example, inthis case, spacer pairs can be provided between the pixel groups 01. Forexample, three spacer pairs can be formed around each pixel group 01,thereby facilitating the support of the mask plate during thefabrication of the light emitting layer.

FIG. 2B illustrates a display substrate provided by at least oneembodiment of the present disclosure. In the display substrate, thefirst spacer 0101 and the second spacer 0102 of the spacer pair 01012are located on the same side of the third sub-pixel 113.

FIG. 2C illustrates a display substrate provided by at least oneembodiment of the present disclosure. The display substrate includes twotypes of spacer pairs 01012. One type of spacer pair 01012 is located onthe same side (e.g., left side) of the third sub-pixel 113 in the firstpixel group 011. Another type of spacer pair 01012 is located on thesame side (e.g., right side) of the second sub-pixel 112 in the secondpixel group 012.

FIG. 2D illustrates a display substrate provided by at least oneembodiment of the present disclosure. The display substrate includes afirst spacer 0101 and a third spacer 0103. The third spacer 0103 can bedisposed between two non-sensitive colors of different pixel groups 01.For example, between the second sub-pixel 112 and the third sub-pixel113.

In order to facilitate the description of the pixel arrangementstructure, the spacer in the display substrate is removed upon the pixelarrangement structure being described below. The first spacer 0101, thesecond spacer 0102, the third spacer 0103 and the like in thisembodiment of the present disclosure may be disposed in the pixelarrangement structure described below.

As illustrated by FIG. 2E, at least one embodiment of the presentdisclosure provides a display substrate, and the pixel arrangementstructure includes a plurality of pixel groups 01. Each of the pluralityof pixel group 01 includes one first sub-pixel 111, one second sub-pixel112, one third sub-pixel 113, and one fourth sub-pixel 114. Theconnection line between the center C2 of the second sub-pixel 112 andthe center C3 of the third sub-pixel 113 is a first line segment LS1;the first sub-pixel 111 and the fourth sub-pixel 114 are located betweenthe second sub-pixel 112 and the third sub-pixel 113 and arerespectively located on both sides of the first line segment LS1. Forexample, a connection line between the center C1 of the first sub-pixel111 and the center C4 of the fourth sub-pixel 114 is a second linesegment LS2. The length of the second line segment LS2 is smaller thanthe length of the first line segment LS1. For example, in order toobtain a better pixels per inch arrangement effect, the ratio of thelengths of the second line segment LS2 and the first line segment LS1 isless than or equal to ¾.

In the display substrate provided by at least one embodiment of thepresent disclosure, in the pixel arrangement structure of the displaysubstrate, the distance between the first sub-pixel and the fourthsub-pixel in the same pixel group is reduced, on the one hand, the pixelarrangement can be made tighter, the color mixing risk can be reduced,the color edge can be improved, and the visual graininess can beimproved. On the other hand, the spacing between sub-pixels can bewidened to facilitate fabrication. Alternatively, a balance can be foundbetween the tightness of pixel arrangement and the spacing betweensub-pixels, so that the pixel arrangement is relatively tight and thespacing between sub-pixels (pixel defining layer spacing) is widened toa certain extent, which is beneficial to reducing the risk of colormixing, improving color edges, improving the visual graininess andwidening the spacing between sub-pixels. For example, the shape of eachsub-pixel given in the embodiments of the present disclosure can bedefined by a pixel defining layer, but is not limited thereto. Forexample, each sub-pixel in the figure is an actual light emitting area.The specific shape of each sub-pixel can be set according to thepreparation process. For example, the actual light emitting area can bedetermined by the shape of at least one of the electrode, the lightemitting layer, and the pixel defining layer.

For example, upon the pixel arrangement structure being applied to anOLED display substrate and the first sub-pixel and the fourth sub-pixelare of the same color, the light emitting layer patterns of the firstsub-pixel and the fourth sub-pixel in the same pixel group can also beformed by vapor deposition using the same opening of the mask plate.

For example, the first sub-pixel 111 and the fourth sub-pixel 114 can besub-pixels of human eye sensitive color, for example, may be greensub-pixels, yellow sub-pixels, white sub-pixels, etc. For example, theareas of the first sub-pixel 111 and the fourth sub-pixel 114 arerelatively small compared to the second sub-pixel 112 and the thirdsub-pixel 113. For example, the area of the first sub-pixel 111 issmaller than the area of the second sub-pixel 112, and/or the area ofthe first sub-pixel 111 is smaller than the area of the third sub-pixel113. Similarly, the fourth sub-pixel 114 may refer to the abovedescription of the area of the first sub-pixel 111. That is, the area ofthe fourth sub-pixel 114 is smaller than the area of the secondsub-pixel 112, and/or the area of the fourth sub-pixel 114 is smallerthan the area of the third sub-pixel 113.

In the display substrate provided by at least one embodiment of thepresent disclosure, the pixel arrangement structure can improve thedistribution uniformity of the sensitive color sub-pixels by adjustingthe spacing of the sensitive color sub-pixels in the visual position,thereby improving the visual resolution of the pixel arrangementstructure and improving the display quality.

The second sub-pixel 112 and the third sub-pixel 113 may be sub-pixelsof color insensitive to human eyes. For example, one of the secondsub-pixel 112 and the third sub-pixel 113 is a red sub-pixel and theother is a blue sub-pixel, but is not limited thereto. In thisembodiment of the present disclosure, the second sub-pixel 112 is a redsub-pixel and the third sub-pixel 113 is a blue sub-pixel. It should benoted that when the pixel arrangement structure adopts the red greenblue (RGB) mode, the above-mentioned human eye sensitive color can begreen.

As illustrated by FIG. 2E, the first line segment LS1 can extend in thefirst direction X and the second line segment LS2 can extend in thesecond direction Y. For example, the first direction X is perpendicularto the second direction Y. For example, in each pixel group 01, thefirst sub-pixel 111 and the fourth sub-pixel 114 are arranged with thefirst direction X as an axis of symmetry, so that the pixel structure isarranged more uniformly. For example, the first sub-pixel 111 isuniformly arranged relative to the second sub-pixel 112 and the thirdsub-pixel 113, and is kept consistent, so that the pixel structure isarranged more uniformly.

As illustrated by FIG. 2E, in the pixel arrangement structure of thedisplay substrate provided by one or more embodiments of the presentdisclosure, the second line segment LS2 is perpendicular to the firstline segment LS1. Thus, the pixel arrangement can be made more uniform.For example, the second line segment LS2 is located on the perpendicularbisector of the first line segment LS1. In this case, the widths ofsub-pixels of each color in the first direction X can be the same, butare not limited thereto. Therefore, the pixel structure distribution canbe made more uniform, the picture display quality is higher, and theproblem of display graininess at lower PPI is improved.

As illustrated by FIG. 2E, for convenience of description, a pluralityof square dashed frames are provided, each dashed frame has a length of1/2L, and four dashed frames can form a square with an edge length of L.In FIG. 2E, there is a pixel group 01 in the dark rectangle dashedframe. The pixel group 01 can be the minimum repeating unit of the pixelarrangement structure. For example, the pixel arrangement structure canbe obtained by translating and copying the minimum repeating unit. Forexample, sub-units that can be translated and repeated to be arranged toform a pixel structure are not included in the minimum repeating unit.For example, as illustrated by FIG. 2, the dark rectangular dashed framehas a length of 2L and a width of L.

As illustrated by FIG. 2E, the first line segment SL1 is perpendicularto the second line segment SL2 and is vertically bisected with eachother. The first line segment SL1 vertically bisects the second linesegment SL2. The second line segment SL2 also vertically bisects thefirst line segment SL1. For example, in the pixel group 01, the maximumarea enclosed by the connection lines between the centers of the firstsub-pixel 111, the second sub-pixel 112, the fourth sub-pixel 114 andthe third sub-pixel 113 is rhombus, and the first line segment SL1 andthe second line segment SL2 are respectively diagonal lines of therhombus.

As illustrated by FIG. 2E, in the pixel group 01, the distance betweenthe center C1 of the first sub-pixel 111 and the center C4 of the fourthsub-pixel 114 can be greater than or equal to ½L, for example, thedistance can range from ½L to L. For example, the first sub-pixel 111and the fourth sub-pixel may adopt sub-pixels of the same color. Whenthe first sub-pixel 111 and the fourth sub-pixel adopt sub-pixels of thesame color, such as the first sub-pixel 111, the setting of the distancecan also avoid the situation that two adjacent first sub-pixels aredifficult to distinguish due to the close distance between the adjacentfirst sub-pixels and are combined into one by human vision, thusavoiding the graininess caused thereby. Therefore, the pixel arrangementstructure can improve the distribution uniformity of the firstsub-pixels, thereby improving the visual resolution and also improvingthe display quality.

As illustrated by FIG. 2E, the distance between the center C3 of thethird sub-pixel 113 and the center C2 of the second sub-pixel 112 can be4/3L. In order to make the ratio of the length of the second linesegment LS2 to the length of the first line segment LS1 less than orequal to ¾, the distance between the third sub-pixel 113 and the secondsub-pixel 112 in the same pixel group can be increased and/or thedistance between the first sub-pixel 111 and the fourth sub-pixel 114can be decreased under the condition permitted by the process.

As illustrated by FIG. 2E, in the display substrate provided by one ormore embodiments of the present disclosure, in order to obtain a closelyarranged pixel structure, the ratio of the lengths of the second linesegment LS2 and the first line segment LS1 can be greater than or equalto ⅜.

Please continue to refer to FIG. 2A, as illustrated by FIG. 2A, at leastone of the first spacer 0101 and the second spacer 0102 does not overlapwith the center connection line between the first sub-pixel 111 and thethird sub-pixel 113. For example, at least one of the first spacer 0101and the second spacer 0102 does not overlap with the center connectionline between the blue sub-pixel and the green sub-pixel.

For example, in order to reduce color shift at different viewing angles,the orthographic projection of the first spacer 0101 on a straight linein the first direction does not overlap or partially overlap with theorthographic projection of at least one of the second sub-pixel 112 andthe third sub-pixel 113 on the straight line in the first direction.

For example, the ratio of the sum of the numbers of the first spacers0101 and the second spacers 0102 to the number of sub-pixels is 0.3-1.For example, the sub-pixels include the first sub-pixels 111, the secondsub-pixels 112, the third sub-pixels 113, and the fourth sub-pixels 114.For example, in the same pixel group, the ratio of the sum of thenumbers of the first spacer 0101 and the second spacer 0102 to thenumber of sub-pixels is 0.3-1.

The position design of the spacer to prevent angle color shift has beendescribed above. However, embodiments of the present disclosure alsoprovide another solution for spacers. For example, a transparent spacercan be used to prevent angle color shift. The position of thetransparent spacer is not limited to the above position. For example,the transparent spacer can use a material with high light transmittanceor even full transparency and meeting other alternative requirementsinstead of polyimide material with poor light transmittance. At thistime, no matter from which angle the screen is viewed, since theselected material has high light transmittance and has no selectivityfor light transmission of different wavelengths, both red light and bluelight can normally emit without being blocked by the spacer. The normallight emission has nothing to do with the observation angle, thus tosome extent improving the problem of angle color shift and asymmetry ofleft and right viewing angles under the white screen.

Alternative materials for the spacer may be organic silicone. Organicsilicone films have excellent heat resistance, low temperatureflexibility, high dielectric constant, and insulation properties. Inaddition, organic silicon films, such as high molecular polymer filmsusing dimethyl siloxane (PDMS) as raw materials, are colorless andoptically transparent, and can still achieve very high or even more than90% light transmittance at millimeter-level thickness, thus enabling thespacer to have good transparency in the visible light range. Taking anorganic silicon materialN-(trimethoxysiliconpropyl)-4-azide-2,3,5,6-tetrafluorobenzamide(PFPA-silane) as an example, it is shown that the organic siliconmaterial has high light transmittance (close to 80%) and has littledifference in light transmittance at different wavelengths.

In addition, the material of the spacer can also be modified, colorlessand transparent new polyimide material. Due to many excellent propertiesof polyimide itself and its modified high light transmittance in thewhole visible light band, polyimide can be used as a transparent spacermaterial. For example, polyimide and silicon dioxide PI/SiO₂ compositefilms can be used. After being modified, the light transmittance of themodified PI/S_(i)O₂ composite film is greatly improved compared withthat of pure polyimide, and has almost no selectivity to wavelengths inthe visible light range, and the light transmittance at differentwavelengths is almost the same. Both high transmittance andnon-selectivity of light transmittance to wavelength are beneficial tothe improvement of angle color shift.

FIG. 3A illustrates the pixel arrangement structure with the dashedlines in FIG. 2E removed. The dashed lines, centers, etc. given in theembodiments of the present disclosure are for convenience of describingthe given virtual lines, virtual centers. For example, the center can bethe center of gravity, the intersection point of perpendicular bisectorof opposite sides, etc., but is not limited thereto.

FIG. 3B illustrates a display substrate provided by one or moreembodiments of the present disclosure. In the same pixel group 01, thefirst sub-pixel 111 and the fourth sub-pixel 114 adopt the same color.For example, both are the first sub-pixel 111. Since the sub-pixels ofthe same color do not have the problem of color mixing, the lightemitting layer patterns of the first sub-pixel 111 and the fourthsub-pixel 114 in the same pixel group 01 can be vapor deposited usingthe same opening of the mask plate, thereby being beneficial to thescreening of the mask plate, having small screening pressure andimproving the quality of the screening.

As illustrated by FIG. 3B, because the slope of the first sub-pixels 111of the same row is low, upon the first sub-pixels 111 belonging to thesame row displaying a straight line together, the fluctuation amplitudeof the first sub-pixels of adjacent pixel groups is small due to the lowslope (dashed line with dense dots in FIG. 3B), thus avoiding thesituation that two straight lines generated by interlocking withstraight lines displayed in adjacent rows due to large fluctuationamplitude are difficult to distinguish and are combined into onevisually by human eyes. Therefore, the pixel arrangement structure canimprove the visual resolution.

FIG. 3C illustrates a display substrate provided by one or moreembodiments of the present disclosure. As illustrated by FIG. 3C, ineach pixel group 01, the first sub-pixel 111 and the fourth sub-pixel114 are sub-pixels of the same color, and can include, for example, twotypes of pixel groups, in which pairs of sub-pixels of the same color inone type of pixel group are first sub-pixels (e.g., green sub-pixels),and pairs of sub-pixels of the same color in another type of pixel groupare fourth sub-pixels (e.g., white sub-pixels or yellow sub-pixels). Thecolors of the two sub-pixels arranged in pairs between the secondsub-pixel and the third sub-pixel in the pixel group adjacent in thediagonal direction of each pixel group are different from the colors ofthe sub-pixels arranged in pairs between the second sub-pixel and thethird sub-pixel in the pixel group.

FIG. 4 illustrates a display substrate provided by one or moreembodiments of the present disclosure. As illustrated by FIG. 4, thefirst line segment LS1 can extend in the first direction X, and a lengthD1 of a center connection line LS3 between adjacent second sub-pixels112 and third sub-pixels 113 in two adjacent pixel groups 01 in thefirst direction X is less than a length of the first line segment LS1,so that pixels can be closely arranged. In FIG. 4, the length of thefirst line segment LS1 is 4/3L, but is not limited thereto. For example,the length of the first line segment LS1 can range from 11/9L to 13/9L.

For example, in order to allow the tight arrangement of pixels andprocess conditions to be combined, the ratio of the length D1 of thecenter connection line LS3 between the center of the adjacent secondsub-pixel 112 and the center of the third sub-pixel 113 in the twoadjacent pixel groups 01 in the first direction to the length of thefirst line segment LS1 is less than or equal to ½. In FIG. 4, the lengthD1 is ⅔L, but it is not limited thereto. For example, the length D1 canrange from 5/9L to 7/9L.

As illustrated by FIG. 4, in the pixel arrangement structure of thedisplay substrate provided by one or more embodiments of the presentdisclosure, a plurality of pixel groups 01 are arranged in an array, aplurality of rows and a plurality of columns are included, for example,the pixel arrangement structure includes a plurality of first pixelgroups 011 located in odd rows and a plurality of second pixel groups012 located in even rows. For example, pixel groups of even rows andpixel groups of odd rows are arranged in a staggered way. The secondline segment LS2 can extend in the second direction Y. For example, inorder to realize pixel arrangement density in the column direction, inthe adjacent odd row or in the adjacent even row, the length D2 of thecenter connection line L14 between the first sub-pixel 111 and thefourth sub-pixel 114 which are adjacent to each other in two adjacentones of the plurality of pixel groups 01 in the second direction Y isgreater than the length of the second line segment LS2. For example, intwo adjacent ones of the odd rows or in two adjacent ones of the evenrows, the ratio of the length D2 of the center connection line L14between the adjacent first sub-pixel 111 and the fourth sub-pixel 114 inthe adjacent two pixel groups 01 in the second direction Y to the lengthof the second line segment LS2 ranges from 1 to 3.

For example, in adjacent odd rows or in adjacent even rows, the lengthD2 of the center connection line L14 between the adjacent firstsub-pixel 111 and the fourth sub-pixel 114 in the adjacent two pixelgroups 01 in the second direction Y is greater than the length of thesecond line segment LS2.

Thus, a pixel structure in which 6 pixel groups are closely arrangedaround one pixel group can be formed. The odd row pixel groups and theeven row pixel groups are staggered. For example, the odd row pixelgroups and the even row pixel groups are offset in the first direction Xby the length of half a pixel group in the first direction X, forexample, the offset length is L, but is not limited thereto. Forexample, in adjacent odd rows or in adjacent even rows, the ratio of thelength D2 of the center connection line between the adjacent firstsub-pixel 111 and the fourth sub-pixel 114 in the adjacent two pixelgroups 01 in the second direction Y to the length of the second linesegment LS2 ranges 1 to 3.

As illustrated by FIG. 4, in the pixel arrangement structure of thedisplay substrate provided by one or more embodiments of the presentdisclosure, an extension line of the second line segment LS2 of eachpixel group 01 passes through a midpoint CO of a center connection lineLSC between two pixel groups 01 adjacent to the pixel group 01 in thesecond direction Y and located in the same row. The center of each pixelgroup 01 is C1, and the connection line between the centers C1 of twoadjacent pixel groups 01 is the center connection line LSC. For example,the center C1 of the pixel group 01 may be the intersection point of thefirst line segment LS1 and the second line segment LS2.

For example, the extension line of the second line segment LS2 of eachfirst pixel group 011 passes through the center C5 of the centerconnection line LS3 between the adjacent third sub-pixel 113 and thesecond sub-pixel 112 of the two second pixel groups 012 adjacent to thefirst pixel group 011 and located in the same row. For example, thecenter C5 and the center CO can be the same point.

As illustrated by FIG. 4, in the display substrate provided by one ormore embodiments of the present disclosure, in two adjacent odd rows ortwo adjacent even rows, an intersection point IP1 of the centerconnection line LS4 between two third sub-pixels 113 in two adjacentpixel groups 01 (two adjacent first pixel groups 011 or two adjacentsecond pixel groups 012) arranged in the second direction Y and thefirst line segment LS1 in one pixel group 01 located between the twothird sub-pixels 113 is located between a center IPO of the first linesegment LS1 and a center C2 of the second sub-pixel 112 of the one pixelgroup 01. For example, the center IPO of the first line segment LS1 canbe the center C 1 of the pixel group 01. For example, the intersectionpoint IP1 is located at the midpoint of the connection line between thecenter IPO of the first line segment LS1 and the center C2 of the secondsub-pixel 112.

For example, in adjacent odd rows, the intersection point IP1 of thecenter connection line LS4 between the two third sub-pixels 113 of theadjacent first pixel groups 011 located in the same column and the firstline segment LS1 of the second pixel group 012 adjacent to the thirdsub-pixel 113 is located at a position between the intersection pointIPO of the first line segment LS1 and the second line segment LS2 of thesecond pixel group 012 and the center C2 of the second sub-pixel 112.The third sub-pixel 113 above-mentioned can also be replaced by thesecond sub-pixel 112.

For example, in adjacent odd rows or adjacent even rows, theintersection point of the center connection line between two secondsub-pixels 112 in two adjacent pixel groups 01 (two adjacent first pixelgroups 011 or two adjacent second pixel groups 012) arranged in thesecond direction Y and the first line segment LS1 in the pixel group 01located between the two second sub-pixels 112 is located between thecenter IPO of the first line segment LS1 and the center C3 of the thirdsub-pixel 113. For example, the intersection point is located at themidpoint of the connection line between the center IPO of the first linesegment LS1 and the center C3 of the third sub-pixel 113.

For example, the first spacer 0101 is disposed between adjacent pixelgroups of different rows. For example, the second spacer 0102 isdisposed between adjacent pixel groups of different rows.

As illustrated by FIG. 4, in the pixel arrangement structure provided byone or more embodiments of the present disclosure, in the same pixelgroup, the closest distance between the second sub-pixel 112 and thefirst sub-pixel 111 is L1, the closest distance between the secondsub-pixel 112 and the fourth sub-pixel 114 is L2, the closest distancebetween the third sub-pixel 113 and the first sub-pixel 111 is L3, theclosest distance between the third sub-pixel 113 and the fourthsub-pixel 114 is L4, L1=L2=L3=L4.

As illustrated by FIG. 4, in the pixel arrangement structure provided byone or more embodiments of the present disclosure, the closest distancebetween the second sub-pixel 112 and one of the first sub-pixel 111 andthe fourth sub-pixel 114 is L5, the closet distance between the thirdsub-pixel 113 and one of the first sub-pixel 111 and the fourthsub-pixel 114 is L6, the second sub-pixel 112 and the third sub-pixel113 are in a pixel group being adjacent to the first sub-pixel or thefourth sub-pixel in the second direction and are not in the same rowwith the first sub-pixel or the fourth sub-pixel, and L5=L6.

For example, in an embodiment, L1=L2=L3=L4=L5=L6.

For example, with respect to L1, L2, L3, L4, L5, and L6, the marks aboutthe minimum process spacing d in FIGS. 7A and 7B can also be referredto. Each nearest distance is the minimum distance between twosub-pixels. For example, Ll, L2, L3, L4, L5, and L6 can be made as closeas possible to the minimum process spacing d during actual fabrication.For example, the closest distance is the distance between the closesttwo points on the outer edge of the two sub-pixels.

As illustrated by FIG. 4, in the pixel arrangement structure provided byone or more embodiments of the present disclosure, the opposite sides ofadjacent pixies are approximately parallel or have an included angleless than 45 degrees, and the adjacent sub-pixels include any twoadjacent ones of the first sub-pixel 111, the second sub-pixel 112, thethird sub-pixel 113, and the fourth sub-pixel 114.

As illustrated by FIG. 5A, in the pixel arrangement structure of thedisplay substrate provided by one or more embodiments of the presentdisclosure, the first sub-pixel 111 and the fourth sub-pixel 114 areboth strip-shaped, and the extension direction Al of the first sub-pixel111 does not coincide with the extension direction A2 of the fourthsub-pixel 114. For example, the extension direction Al of the firstsub-pixel 111 intersects or has an included angle with the extensiondirection A2 of the fourth sub-pixel 114. For example, in each pixelgroup, the first sub-pixel 111 and the fourth sub-pixel 114 are arrangedwith the first direction X as an axis of symmetry and inclined at acertain angle. For example, the included angle between the inclinationangle and the first direction X ranges from 30 to 50 degrees, andfurther for example, the included angle is 45 degrees, but is notlimited thereto. For example, the extension direction Al of the firstsub-pixel 111 can be the long axis direction of the first sub-pixel 111,but is not limited thereto. For example, the extension direction A2 ofthe fourth sub-pixel 114 can be the long axis direction of the fourthsub-pixel 114, but is not limited thereto.

As illustrated by FIG. 5A, in each pixel group 01 of the pixelarrangement structure provided by one or more embodiments of the presentdisclosure, the first sub-pixel 111 and the fourth sub-pixel 114 aresymmetrically arranged with respect to the first line segment LS1. Forexample, in each pixel group 01, the first sub-pixel 111 and the fourthsub-pixel 114 are asymmetrically arranged with respect to the secondline segment LS2.

For example, the second sub-pixel 112 and the third sub-pixel 113 aresymmetrically arranged with respect to the second line segment LS2, butis not limited thereto.

For example, in this embodiment of the present disclosure, the stripshape refers to a shape in which a length in one direction is greaterthan a length in another direction, or a dimension in one direction isgreater than a dimension in other directions. The strip shape is notlimited to a rectangle, and can be other shapes, for example, may be along hexagonal shape, an oblong shape, a trapezoid shape, or othershapes. In the embodiments of the present disclosure, the shape of eachsub-pixel is not limited to a regular shape, and can be an irregularshape.

For example, the included angle between the extension direction Al ofthe first sub-pixel 111 and the extension direction A2 of the fourthsub-pixel 114 ranges from 70 degrees to 100 degrees, further, theincluded angle can range from 80 degrees to 95 degrees, further, theincluded angle can be 90 degrees (a right angle), so that the firstsub-pixel 111 and the fourth sub-pixel 114 forming a larger area can beutilized to improve the light emitting area and is beneficial to thescreening of the mask plate during fabricating the mask plate of thelight emitting layer pattern. For example, in a case where the includedangle is a right angle, deviations of up and down several degrees can beallowed. For example, it can deviate from 90 degrees by 5 degrees.

FIG. 5B illustrates a display substrate provided by one or moreembodiments of the present disclosure, in a pixel arrangement structureof the display substrate, an included angle between an extensiondirection Al of the first sub-pixel 111 and an extension direction A2 ofthe fourth sub-pixel 114 is a right angle, and in the same pixel group01, the first sub-pixel 111 and the fourth sub-pixel 114 are sub-pixelsof the same color.

FIG. 6 illustrates a display substrate provided by one or moreembodiments of the present disclosure. As illustrated by FIG. 6, thesecond sub-pixel 112 and the third sub-pixel 113 can be rhombus orapproximately rhombus. Approximate rhombus includes, for example,rounded rhombus, chamfered rhombus, etc., but is not limited thereto.The sub-pixel shape of rhombus or approximately rhombus shape is morefavorable for pixel dense arrangement. For example, the first sub-pixel111 can be relatively symmetrical around the third sub-pixel 113 and thesecond sub-pixel 112, with the long sides of the first sub-pixel 111 allfacing the second sub-pixel 112 and the short sides all facing the thirdsub-pixel 113 to ensure the uniformity of pixel arrangement to thegreatest extent. The arrangement of the first sub-pixels 111 is moreuniform, which can improve the color edge to a certain extent, isconducive to the realization of high PPI, and can improve the pixelaperture ratio as high as possible.

The shape of each sub-pixel is not limited to the above, and the shapesof the sub-pixels can be adjusted as required. Maximizing the area isthe main principle for determining the shape of sub-pixels.

In order to avoid color mixing, the spacing between different colorsub-pixels should be greater than the minimum process spacing d of thepatterning process, and some special process symmetry requirementsshould be considered. For example, the FMM screening requiressymmetrical opening patterns and distribution, and the shapes of thefirst sub-pixel and the fourth sub-pixel can be symmetrical pentagonswith right-angle bottom corners respectively (as illustrated by FIG.2E). It can be seen that the spacing between the second and thirdsub-pixel of adjacent pixel groups using symmetrically shaped sub-pixelsare significantly larger than other spacing between different colorsub-pixels (the minimum process spacing d), i.e., there is still usablearea in design. Under the condition that FMM screening technology allowsor adopts other symmetry insensitive (e.g. CF) processes, asymmetricalsub-pixel shapes can be adopted to realize maximum sub-pixel area.

FIGS. 7A and 7B illustrate pixel arrangement structures in a displaysubstrate provided by one or more embodiments of the present disclosure.As illustrated by FIGS. 7A and 7B, under the condition that asymmetricsub-pixel shapes are allowed to be adopted, according to the minimumprocess spacing d of different patterning processes, the shapes of thesecond sub-pixel 112 and the third sub-pixel 113 can be right-angletrapezoids or right-angle trapezoids with acute angles cut off, so as tomaximize the area.

As illustrated by FIG. 7A, because the shapes of the second sub-pixel112 and the third sub-pixel 113 are both right-angle trapezoids,compared to the case where the shapes of the second sub-pixel 112 andthe third sub-pixel 113 are both hexagonal (a hexagonal shape formed bycombining two pentagons with symmetrical right-angle bottom angles), theacute angle portions 190 of the second sub-pixel 112 and the thirdsub-pixel 113 can further improve the areas of the second sub-pixel 112and the third sub-pixel 113, and thus further improve the spaceutilization rate in the pixel group. The pixel arrangement structure canimprove the space utilization rate in the pixel group.

As illustrated by FIG. 7B, the shapes of the second sub-pixel 112 andthe third sub-pixel 113 are both isosceles trapezoids with acute anglescut off. Therefore, when the process accuracy is constant, that is, whenthe distances between the first sub-pixel 111 and the second sub-pixel112 and between the first sub-pixel 111 and the third sub-pixel 113 areconstant, the areas of the second sub-pixel 112 and the third sub-pixel113 are increased, thereby improving the utilization rate of the spacewithin the pixel group.

In the pixel arrangement structure in the display substrate provided byone or more embodiments of the present disclosure, the shapes of thesecond sub-pixel 112 and the third sub-pixel 113 include at least one ofisosceles trapezoid, hexagon and rhombus, and the shape of the secondsub-pixel 112 includes at least one of pentagon, rectangle andapproximate rectangle. The approximate rectangle includes, for example,but is not limited to, a rounded rectangle.

FIG. 8 illustrates a display substrate provided by one or moreembodiments of the present disclosure. As illustrated by FIG. 8, in thesame row of pixel groups, the third sub-pixel 113 and the firstsub-pixel 111 can be driven by the first drive line DL1, and the secondsub-pixel 112 and the fourth sub-pixel 114 can be driven by the seconddrive line DL2. The first drive line DL1 extends in the direction E1 andthe second drive line DL2 extends in the direction E1. For example, thedirection E1 is parallel to the first direction X.

As illustrated by FIG. 8, the first sub-pixel 111 and the fourthsub-pixel 114 in the odd column pixel group can use the first data lineDT1 to input data signals, and the second sub-pixel 112 and the thirdsub-pixel 113 located between the adjacent two first data lines DT1 canuse the second data line DT2 to input data signals. For example, thedata signal includes a voltage and/or a current. The first data line DT1extends in the direction E2, and the second data line DT2 also extendsin the direction E2, which is parallel to the second direction Y.

FIG. 9 illustrates a schematic diagram of a display substrate. In thedisplay substrate, the widths of the sub-pixels in the first direction Xare different. Because the widths of the sub-pixels are different, it iseasy to produce color shift when viewing at different viewing angles.

FIG. 10 illustrates a schematic diagram of a display substrate providedby one or more embodiments of the present disclosure. In the firstdirection X, the widths of the first sub-pixel 111, the second sub-pixel112, the third sub-pixel 113, and the fourth sub-pixel 114 are the samein the first direction X. Therefore, the viewing angle color shift whenviewing at different viewing angles can be reduced.

For example, one pixel group includes two pixel units, for example, thefirst sub-pixel 111 and the second sub-pixel 112 form a pixel unit, thethird sub-pixel 113 and the fourth sub-pixel 114 form the other pixelunit. Each pixel unit can share the third sub-pixel 113 or the fourthsub-pixel 114 adjacent thereto for full color display. The display isrealized by sub-pixel sharing. The division of pixel cells is notlimited to the above description. The pixel unit herein can be referredto as a virtual pixel. The division of virtual pixels is related to thedriving mode. The specific division mode of the virtual pixels can bedetermined according to the actual driving mode, and the presentdisclosure is not specifically limited to this.

FIG. 11 illustrates a schematic diagram of a display substrate providedby one or more embodiments of the present disclosure. As illustrated byFIG. 11, the display substrate includes a third spacer 0103 locatedbetween the first sub-pixel 111 and the fourth sub-pixel 114 in thepixel group 01. For example, the first sub-pixel 111 and the fourthsub-pixel 114 can be both green sub-pixels, but are not limited thereto.

At the side view angle, the light emission of each sub-pixel is notshielded by the third spacer 0103, thereby improving the color asymmetryphenomenon at the left and right view angles when displaying a whitepicture to a certain extent, and improving the image quality and thedisplay effect. By arranging the third spacer 0103, the problem ofinconsistent light shielding for each sub-pixel in the left and rightdirections is basically eliminated, and further the phenomenon of colorasymmetry at left and right angles can be eliminated to a great extent.For the up and down directions, because the third spacer only shieldsthe first sub-pixel and the fourth sub-pixel, even if the angle colorshift is generated due to the shielding for the first sub-pixel and thefourth sub-pixel, the phenomenon of angle color shift does not existbecause the shielding for the first sub-pixel and the fourth sub-pixelare consistent under the same angle in the up and down directions. Forexample, by adjusting the size and thickness of the third spacer 0103,the shielding degree of the third spacer 0103 to the first sub-pixel 111and the fourth sub-pixel 114 can be adjusted, thereby adjusting theangle color shift degree in the up and down directions.

As illustrated by FIG. 11, the extension direction E03 of the thirdspacer 0103 is perpendicular to the connection line CLO between thecenter C1 of the first sub-pixel 111 and the center C4 of the fourthsub-pixel 114, but is not limited thereto.

As illustrated by FIG. 11, the length of the third spacer 0103 in thefirst direction X is greater than the length of at least one of thefirst sub-pixel 111 and the fourth sub-pixel 114 in the first directionX.

As illustrated by FIG. 11, the shapes of the first sub-pixel 111 and thefourth sub-pixel 114 are both pentagon. The pentagon includes a group ofparallel opposite sides and a vertical side, and the vertical side isperpendicular to the group of parallel opposite sides. The third spacer0103 is parallel to the vertical side of the pentagon.

FIG. 12 is a cross-sectional view of a display substrate provided by anembodiment of the present disclosure. As illustrated by FIG. 12, thestructure includes a base substrate 001, and a buffer layer 002, a firstgate insulation layer 003, a second gate insulation layer 004, aninterlayer dielectric layer 005, a planarization layer 006, and a pixeldefining layer 007 sequentially located on the base substrate 001. Ascan be seen from FIG. 12, below the sub-pixel, there is a thin filmtransistor structure including a gate electrode 302, an active layer301, and a drain electrode 303. The thin film transistor can be one ofthe thin film transistors in a pixel drive circuit, and the connectionrelationship with other components can be set according to the specificpixel circuit arrangement, which is not illustrated by detail herein. Inaddition, a signal line 304 can also be included at a position on thesame layer as the drain electrode 303, and the signal line 304 can alsobe used as a signal line of a specific function according to differentpixel circuit arrangements, for example, a data line or a gate line,etc. As can be seen from FIG. 12, the pixel defining layer 007 caninclude openings defining sub-pixels. The anode 403 of the sub-pixel andthe light emitting layer 503 of the third sub-pixel are located in theopenings of the pixel defining layer 007. It should be noted that thestructure of the display substrate is not limited to that illustrated byFIG. 12.

For example, the anode 403 and the light emitting layer 503 are incontact with each other, so that the light emitting layer can be drivento emit light at a portion in contact with each other, and therefore,the portion in contact with each other between the anode 403 and thelight emitting layer 503 is an effective portion in which the sub-pixelcan emit light. Here, the anode 403 serves as a pixel electrode so thatdifferent data voltages can be applied to different sub-pixels. However,in the embodiments according to the present disclosure, the electrodeused as the pixel electrode of the sub-pixel is not limited to theanode, and the cathode of the light emitting diode may also be used asthe pixel electrode. Therefore, in the embodiments of the presentdisclosure, the shape of the sub-pixel can refer to the shape of aportion where the pixel electrode and the light emitting layer contacteach other. For example, for each sub-pixel, the area of the pixelelectrode can be slightly larger than the area of the light emittinglayer, or the area of the light emitting layer can be slightly largerthan the area of the pixel electrode, and the embodiments of the presentdisclosure is not particularly limited to this. For example, the lightemitting layer here can include the electroluminescent layer itself andother function layers located on both sides of the electroluminescentlayer, for example, a hole injection layer, a hole transport layer, anelectron injection layer, an electron transport layer, and the like. Insome embodiments, the shape of a pixel can also be defined by a pixeldefining layer. For example, a lower electrode (e.g., an anode) for alight emitting diode can be disposed below a pixel defining layerincluding an opening for defining a pixel that exposes a portion of thelower electrode. When the light emitting layer is formed in the openingin the pixel defining layer described above, the light emitting layercontacts the lower electrode so that the light emitting layer can bedriven to emit light at this portion. Therefore, in this case, theopening of the pixel defining layer defines the shape of the sub-pixel.

For example, the pixel circuit includes at least one transistorincluding a gate, an active layer, and source and drain electrodes. Inone example, the signal line is electrically connected to the sourceelectrode or drain electrode of the corresponding transistor through avia hole penetrating through the insulation layer below it. In oneexample, the active layer of the transistor is formed of a polysiliconlayer. On both sides of the channel region of the active layer, thepolysilicon layer is conductive to form the source and drain electrodes.For example, the signal line is electrically connected to thepolysilicon source or drain electrodes formed by conducting through avia hole. For example, the transistor is a top gate transistor, and avia hole for electrically connecting the signal line to the source ordrain electrodes of the corresponding transistor passes through the gatemetal layer and the data metal layer, and a portion of the metal patternof the gate metal layer and the data metal layer can be used as a relayconnector for electrically connecting the via hole, but embodiments ofthe present disclosure are not limited thereto.

For example, the shapes of the various sub-pixels described in theembodiments of the present disclosure are all approximate shapes. Whenforming the light emitting layer or various electrode layers, it is notguaranteed that the edges of the sub-pixels are strictly straight linesand the corners are strictly angular. For example, the light emittinglayer can be formed by a mask vapor deposition process, and therefore,its corners can be rounded. In some cases, metal etching can have adraft angle, so when forming a light emitting layer of a sub-pixel byvapor deposition, one angle of the light emitting layer can be removed.For example, in the embodiments of the present disclosure, the shapes ofeach sub-pixel are all rounded corners.

For example, as illustrated by FIG. 2A, in a pixel group, the firstsub-pixel 111 and the second sub-pixel 112 are sub-pixels of differentcolors, the first sub-pixel 111 and the second sub-pixel 112 form apixel P, the third sub-pixel 113 and the fourth sub-pixel 114 aresub-pixels of different colors, the third sub-pixel 113 and the fourthsub-pixel 114 form a pixel P, and sub-pixels of other surrounding pixelsneed to be borrowed for color display when displaying an image. Forexample, the first sub-pixel 111 and the fourth sub-pixel 114 are greensub-pixels, the second sub-pixel 112 is red sub-pixel, and the thirdsub-pixel 113 is blue sub-pixel. For example, a red sub-pixel and agreen sub-pixel form a pixel, and a blue sub-pixel and a green sub-pixelform a pixel. The pixel P here only includes sub-pixels of two colors.When displaying an image, it is necessary to use sub-pixels of othersurrounding pixels for color display. Therefore, the pixel P here canalso be referred to as a virtual pixel. In a case of high resolution,green sub-pixels play a decisive role in the perceived luminance centerposition of each pixel. For example, the luminance center of a pixelformed by one red sub-pixel and one green sub-pixel is located betweenthe red sub-pixel and the green sub-pixel and closer to the greensub-pixel, and the luminance center of a pixel formed by one bluesub-pixel and one green sub-pixel is located between the blue sub-pixeland the green sub-pixel and closer to the green sub-pixel.

For example, as illustrated by FIG. 2A, the shapes of the secondsub-pixel and the third sub-pixel are both hexagon, and the three groupsof opposite sides of the hexagon are all parallel; the shapes of thefirst sub-pixel and the fourth sub-pixel are both pentagon, the pentagonincludes a group of parallel opposite sides and a vertical side, and thevertical side is vertical to the group of parallel opposite sides; thevertical edges of the first sub-pixel and the fourth sub-pixel are adjacently arranged; a group of longer parallel opposite sides in thesecond sub-pixel, a group of long parallel opposite sides in the thirdsub-pixel, a group of parallel opposite sides in the first sub-pixel anda group of parallel opposite sides in the fourth sub-pixel are parallel.

When designing the pixel arrangement structure, the sub-pixels aregenerally designed into regular shapes, such as hexagons, pentagons,trapezoids or other shapes. When designing, the center of the sub-pixelcan be the geometric center of the above regular shape. However, in theactual manufacturing process, the shape of the formed sub-pixel willgenerally deviate from the regular shape of the above design. Forexample, the corners of the above regular shape may become roundedcorners, so the shape of the sub-pixel can be rounded corners. Inaddition, the shape of the actually manufactured sub-pixel may also haveother changes from the designed shape. For example, the shape of asub-pixel designed as a hexagon may become approximately oval in theactual manufacturing process. Therefore, the center of the sub-pixel maynot be the strict geometric center of the irregular shape of the formedsub-pixel. In the embodiments of the present disclosure, the center ofthe sub-pixel can have a certain offset from the geometric center of theshape of the sub-pixel. The center of a sub-pixel refers to any point inan area bounded by a specific point on a radiation line segment startingfrom the geometric center of the sub-pixel to each point on the edge ofthe sub-pixel, and the specific point on the radiation line segment is ⅓of the length of the radiation line segment from the geometric center.The definition of sub-pixel center is applicable to the center ofsub-pixel shape with regular shape as well as the center of sub-pixelwith irregular shape.

As mentioned above, due to various manufacturing errors, the shapes ofthe actually manufactured sub-pixels may deviate from the designedshapes of the sub-pixels. Therefore, in the present disclosure, theremay be certain errors regarding the position of the sub-pixel center andthe relationships between the sub-pixel center and the positions ofother objects. For example, if the lines between the sub-pixel centersor the lines passing through the sub-pixel centers satisfy othercorresponding restrictions (e.g., the extension direction), the linesneed only pass through the area enclosed by the centers of theabove-mentioned radiation line segments. Further for example, the centerof the sub-pixel is located on a certain line, which refers to that theline passes through the area enclosed by the center of theabove-mentioned radiation line segment.

In addition, although the shapes of each sub-pixel in the drawingsinclude an angle strictly formed by two line segments, in someembodiments, shapes of each sub-pixel can be a rounded corner pattern.That is, on the basis of the above various graphic shapes, the cornersof each sub-pixel are rounded. For example, upon the light emittinglayer being evaporated through a mask, the corner portion of the lightemitting layer may naturally form a rounded shape.

At least one embodiment of the present disclosure provides a displaydevice including any of the above display substrates. Therefore, thecolor shift of different viewing angles can be improved, and the displayquality can be improved. When the display device adopts the displaypanel with the pixel arrangement structure provided by the embodimentsof the present disclosure, the resolution of the display device can befurther improved, and a display device with real high resolution can befurther provided. In addition, because the pixel arrangement structureprovided by the embodiments of the present disclosure can have bettersymmetry, further, the uniformity of pixel distribution can be improved,and the display effect of the display device can be improved.

For example, in some examples, the display device can be any product orcomponent with display function such as a smart phone, a tabletcomputer, a television, a display, a notebook computer, a digital photoframe, a navigator, etc.

The following statements should be noted:

(1) The accompanying drawings involve only the structure(s) inconnection with the embodiment(s) of the present disclosure, and otherstructure(s) can be referred to common design(s).

(2) In case of no conflict, features in one embodiment or in differentembodiments can be combined.

What have been described above are only specific implementations of thepresent disclosure, the protection scope of the present disclosure isnot limited thereto. Any changes or substitutions easily occur to thoseskilled in the art within the technical scope of the present disclosureshould be covered in the protection scope of the present disclosure.Therefore, the protection scope of the present disclosure should bebased on the protection scope of the claims.

What is claimed is:
 1. A display substrate, comprising: a plurality offirst sub-pixels, a plurality of second sub-pixels, a plurality of thirdsub-pixels, and a plurality of fourth sub-pixels, the plurality ofsecond sub-pixels and the plurality of third sub-pixels are arranged ina plurality of groups in a first direction, the plurality of firstsub-pixels and the plurality of fourth sub-pixels are arranged in aplurality of groups in a second direction, and the first directionintersects with the second direction, in the first direction, a distancebetween one of the plurality of second sub-pixels and one of theplurality of third sub-pixels that are adjacent to each other at leastcomprises a first distance and a second distance, and the first distanceis less than the second distance, in the second direction, a distancebetween one of the plurality of first sub-pixels and one of theplurality of fourth sub-pixels that are adjacent to each other at leastcomprises a third distance and a fourth distance, and the third distanceis less than the fourth distance.
 2. The display substrate according toclaim 1, wherein, in the first direction, distances between two adjacentsub-pixels of the plurality of second sub-pixels and the plurality ofthird sub-pixels are arranged in an alternating manner of the firstdistance and the second distance, and in the second direction, distancesbetween two adjacent sub-pixels of the plurality of first sub-pixels andthe plurality of fourth sub-pixels are arranged in an alternating mannerof the third distance and the fourth distance.
 3. The display substrateaccording to claim 1, wherein the plurality of second sub-pixels and theplurality of third sub-pixels are arranged in the first direction and inthe second direction, center connection lines of second sub-pixels andthird sub-pixels that are adjacent to each other in the first directionare substantially on a straight line, and center connection lines ofsecond sub-pixels and third sub-pixels that are adjacent to each otherin the second direction are at least partially not on a straight line.4. The display substrate according to claim 2, wherein among the secondsub-pixels and the third sub-pixels that are adjacent to each other inthe second direction, orthographic projections of the second sub-pixelson a straight line extending in the first direction overlap withorthographic projections of the third sub-pixels on the straight lineextending in the first direction, and among first sub-pixels and fourthsub-pixels that are adjacent to each other in the first direction,orthographic projections of first sub-pixels on a straight lineextending in the second direction overlap with orthographic projectionsof the fourth sub-pixels on the straight line extending in the seconddirection.
 5. The display substrate according to claim 1, wherein theplurality of first sub-pixels and the plurality of fourth sub-pixels arearranged in the first direction and in the second direction, centerconnection lines of first sub-pixels and fourth sub-pixels that areadjacent to each other in the second direction are substantially on astraight line, and center connection lines of the first sub-pixels andthe fourth sub-pixels that are adjacent to each other in the firstdirection are at least partially not on a straight line.
 6. The displaysubstrate according to claim 1, wherein, among second sub-pixels andthird sub-pixels that are adjacent to each other in the seconddirection, center connection lines of the second sub-pixels aresubstantially on a straight line, and center connection lines of thethird sub-pixels are substantially on a straight line.
 7. The displaysubstrate according to claim 1, wherein a center connection line of thesecond sub-pixel and the third sub-pixel that are adjacent to each otherand with the first distance in the first direction intersects with acenter connection line of the first sub-pixel and the fourth sub-pixelthat are adjacent to each other and with the fourth distance in thesecond direction; a center connection line of the second sub-pixel andthe third sub-pixel that are adjacent to each other and with the seconddistance in the first direction intersects with a center connection lineof one of the plurality of first sub-pixels and one of the plurality offourth sub-pixels that are adjacent to each other and with the thirddistance in the second direction.
 8. The display substrate according toclaim 1, wherein a center connection line of the second sub-pixel andthe third sub-pixel with the second distance in the first direction issubstantially perpendicular to a center connection line of the firstsub-pixel and the fourth sub-pixel with the third distance in the seconddirection, and a center connection line of the second sub-pixel and thethird sub-pixel with the first distance in the first direction issubstantially perpendicular to a center connection line of the firstsub-pixel and the fourth sub-pixel with the fourth distance in thesecond direction.
 9. The display substrate according to claim 1, whereina center connection line of two first sub-pixels and two fourthsub-pixels surrounding one second sub-pixel or one third sub-pixel andadjacent to the second sub-pixel or the third sub-pixel is substantiallyin a shape of a trapezoid.
 10. The display substrate according to claim1, wherein a center connection line of two second sub-pixels and twothird sub-pixels surrounding one first sub-pixel or one fourth sub-pixeland adjacent to the first sub-pixel or the fourth sub-pixel issubstantially in a shape of a trapezoid.
 11. The display substrateaccording to claim 9, wherein at least one diagonal line of thetrapezoid does not pass through a center of an intermediate sub-pixellocated in the trapezoid, and the intermediate sub-pixel is onesub-pixel surrounded by four sub-pixels at four vertices of thetrapezoid.
 12. The display substrate according to claim 11, wherein twodiagonal lines of the trapezoid have different distances from a centerof the intermediate subpixel.
 13. The display substrate according toclaim 1, wherein the first sub-pixel has unequal distances with twosecond sub-pixels adjacent thereto, or the first sub-pixel has unequaldistances with two third sub-pixels adjacent thereto; the fourthsub-pixel has unequal distances with two second sub-pixels adjacentthereto, or the fourth sub-pixel has unequal distances with two thirdsub-pixels adjacent thereto.
 14. The display substrate according toclaim 1, wherein the first sub-pixel has unequal distances with twosecond sub-pixels adjacent thereto, the first sub-pixel has an equaldistance with two third sub-pixels adjacent thereto, or the firstsub-pixel has an equal distance with two second sub-pixels adjacentthereto, and the first sub-pixel has unequal distances with two thirdsub-pixels adjacent thereto; the fourth sub-pixel has unequal distanceswith two second sub-pixels adjacent thereto, and the fourth sub-pixelhas an equal distance with two third sub-pixels adjacent thereto, or thefourth sub-pixel has an equal distance with two second sub-pixelsadjacent thereto, and the fourth sub-pixel has unequal distances withtwo third sub-pixels adjacent thereto.
 15. The display substrateaccording to claim 1, wherein a shape of the first sub-pixel comprises arounded rectangle, and a shape of the fourth sub-pixel comprises arounded rectangle, and two fourth sub-pixels adjacent to a same firstsub-pixel in the second direction have different length direction fromthat of the first sub-pixel.
 16. The display substrate according toclaim 1, wherein a shape of at least one of the second sub-pixel and thethird sub-pixel comprises at least one selected from the groupconsisting of a diamond, a rounded diamond, or a chamfered diamond. 17.The display substrate according to claim 1, wherein the first sub-pixeland the fourth sub-pixel are configured to emit light of a same color,and the second sub-pixel and the third sub-pixel are configured to emitlight of different colors.
 18. A display substrate, comprising aplurality of pixel groups, wherein the plurality of pixel groups arearranged in an array to form a plurality of rows and a plurality ofcolumns, and two adjacent rows of the plurality of pixel groups arearranged in a staggered manner, each of the plurality of pixel groupscomprises a first sub-pixel, a second sub-pixel, a third sub-pixel, anda fourth sub-pixel, in a same pixel group, the second sub-pixel and thethird sub-pixel are arranged in a first direction, and the firstsub-pixel and the fourth sub-pixel are located on both sides of a pairof sub-pixels formed by the second sub-pixel and the third sub-pixel, adistance between the second sub-pixel and the third sub-pixel that areadjacent to each other and in two adjacent pixel groups in the firstdirection is greater than a distance between the second sub-pixel andthe third sub-pixel that are in the same pixel group, and a distancebetween the first sub-pixel and the fourth sub-pixel that are adjacentto each other and in two adjacent pixel groups in the second directionis less than a distance between the first sub-pixel and the fourthsub-pixel that are in the same pixel group; or, a distance between thesecond sub-pixel and the third sub-pixel that are adjacent to each otherand in two adjacent pixel groups in the first direction is less than adistance between the second sub-pixel and the third sub-pixel that arein the same pixel group, and a distance between the first sub-pixel andthe fourth sub-pixel that are adjacent to each other and in two adjacentpixel groups in the second direction is greater than a distance betweenthe first sub-pixel and the fourth sub-pixel that are in the same pixelgroup.
 19. The display substrate according to claim 18, wherein in thesame pixel group, a center connection line of the second sub-pixel andthe third sub-pixel and a center connection line of the first sub-pixeland the fourth sub-pixel are substantially perpendicular to each other.20. The display substrate according to claim 18, wherein, in the samepixel group, one of a center connection line of the second sub-pixel andthe third sub-pixel and a center connection line of the first sub-pixeland the fourth sub-pixel is substantially parallel with the firstdirection, and the other one of the center connection line of the secondsub-pixel and the third sub-pixel and the center connection line of thefirst sub-pixel and the fourth sub-pixel is substantially parallel withthe second direction.